Device for projecting images.



PATENTED MAY 19, 190S.

E. M. BARNES. DEVICE FOR PROJEOTING IMAGES.

APPLICATION FILED NOV. 15, 1900.

3 SHEETS-SHEET 1.

N0 MODEL.

PATENTED MAY 19, 1903.

No. 728,655. I

E. M. BARNES. DEVICE FOR PROJEGTING IMAGES.

APPLICATION FILED NOV. 15, 1900. H0 MODEL. 3 SHEETS-SHEET 2.

Wz'ine s's es, I Inventoz;

,PATENTED AY 19, 1903.

E. BARNES; DEVICE FOR PRKOJEGTING IMAGES,

APPLIOATION FILED NOV. 15, 1900.

3 8HEET8SHEET 3.

KO-MODEL.

Y m m I Wz'tnss'es,

I UNITED STATES Patented May 19, 1903.

PATENT OFFICE.

EDWARD M. BARNES, OF CLEVELAND, OHIO, ASSIGNOR TO THE ADOSCOPEADVERTISING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

DEVICE FOR PROJECTIN G IMAGES.

SPECIFICATION forming part of Letters Patent No. 728,655, dated May 19,1903.

Application filed November 15, 1900. Serial No. 36,553. (No model.)

To all whom it may concern.-

I Be it known that I, EDWARD M. BARNES, a citizen of the United States,and a resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented a new and useful Improvement in Devices for Projecting Images,of which the following is a specification, the principle of theinvention being herein explained and the best mode in which I havecontemplated applying that principle so as to distinguish it from otherinventions.

My invention relates to devices for projecting images upon a screen, andit consists of means hereinafter fully described.

The annexed drawings and the following description set forth in detailcertain means embodying the invention, such disclosed means constitutingbut one of various forms in which the principle of the invention may beused.

Figure I represents a top plan, Fig. II a partial front elevation, andFig. III an end view, of an image-projecting device embodying myinvention. Figs. IV, V, VI, VII, and VIII represent detail views. 7

Upon a suitable frame A, Fig. I, are mounted a stereopticon B, amoving-picture device C, a motor D, and mechanism E, comprising from theshaft-axis, each of which is adapted to receive a transparency-slide G,which may be removably secured therein by means of clamping-screws g.Mounted upon said shaft adjacent to said disk is a worm-wheel H,rotatable upon said shaft independently of said disk. Near the peripheryof said wheel and projecting laterally therefrom in the direction of thedisk are four spring-dogs h, equidistant from the shaft-axis. Oppositethe circumference described by the axes of said dogs during theirrotation about the shaft f are a series of recesses f formed in the diskF, equal in number to the number of apertures g and separated from eachother by angular distances corresponding with those separatingsaidapertures g. Each of said dogs is adapted upon being projected towardsaid disk to engage any recess f in the line of its projection andprojects in the opposite direction from the wheel, as shown in Fig. III.Upon the rear standard f is secured a cam f located and projecting intothe path of the rear end of said dog, as shown in said Fig. III. Theform of such cam is such as to cause said dogs on engaging said camduring its rotation with the wheel H to engage one of the recesses f Aspring-pawl a, secured tothe frame A, Fig. II, engages successively aseries of notches 9 formed in the periphery of disk F, so as topunctuate and secure the successive positions of thelatter, wherebyproper alinement of the dogs and recesses f may be obtained. Said wheelH is positively driven by a worm J, mounted upon a driving-shaft J, uponwhose outer extremity is secured a driving-pulley J Fig. I, driven bythe suitable motor D and belt d.

' The stereopticon B comprises a suitable lamp mounted in a housing Banda lens B mounted upon a support K, the disk F being so located as topermit the apertures g and transparencies mounted therein to passthrough the field of the stereopticon-that is, intermediately of thelens in the housing and the lens B whereby images upon suchtransparencies may be projected upon a suitable screen, (not shown,) asis readily understood. Said housing is slidably mounted upon guidewaysI), Fig. I, by means of which it may be "moved from opposite lens Bopposite the lens 0 in the moving-picture device C and the lamp utilizedto project the pictures upon the film c of such device, the latter beingangularly arranged, so as to project such images upon the screenaforementioned. Such movement of the lamp-housing may be accomplished bythe following means, such means being, however, but one of various formswhich may be utilized for such purpose. A pinion L is secured to a shaft1, Fig. II, to which is secured a cam Z, Figs. VI and VII. Said camengages a lever Z fulcrumed upon standard Z Fig. VII, upon which leveris slidably mounted a half-nut L, which is adapted to engage a screw M,Fig. I, secured upon a driving-shaft M, which drives the moving-picturedevice by a suitable belt Z and pulleys Z and Z Fig. I. Such nut iscaused to rest when out of engagement with said screw at the extreme endof thelever by gravity, the position of said lever at such time beingdownwardly inclined, as shown in dotted lines in said Fig. VII. A chainL is secured to said nut and to the lamp-housing in a manner such as topull the latter opposite the moving-picture device when the nut is movedtoward the shaft l. The disk F is provided upon its inner peripheralportion with a gear-segment 9 which is adapted to engage pinion L andimpart a half-turn to the shaft l. A second segment g projecting beyondsegment 9 as shown in Figs. III and. VI, is adaptedto engage a pinion LFigs. .V and VIII, which is secured to a shaft 1, mounted parallel withand contiguous to shaft 1. A pinion L secured to said shaft and ofsmaller diameter than the pinion L, engages the latter. Segment 9 is ofa length somewhat longer than segment g ,'so that the movement derivedfrom segment 9 may equal that derived from segment g such increasedlength being necessitated by virtue of the diiference in diameter ofpinions L and L as is readily understood. A spring L is secured to theframe and lamp-housing and tends to draw the latter opposite lens B Oneend of shaft M is provided with a driving-pulley M and idle pulley M abelt m from the motor being adapted to drive either the one or theother, according'to its position.

During the projection of the slides upon the screen said belt m ispermitted to engage the idle pulley M The inner end of shaft 1 isprovided with a pinion 'n, Figs. I and VI, which engages a rack 12',formed or secured upon belt-shafting rod N, adapted to shift belt m fromthe idle pulley M onto drivingpulley M or vice versa.

The operation of the above-described device is as follows: Assuming thepositions of the various parts to be those illustrated, the motor andthe intermediate gearing rotates the worm-wheel H continuously. Fourtimes during each revolution of said wheel a springdog h encounters thecam f which causes such dog to engage arecess f thereby causing disk Fto rotate with said Wheel during such engagement an angular distanceequal to that between the centers of contiguous apertures g. Upon therecession of said cam the dog h is released from said disk and thelatter again becomes stationary, its movement being punctuated by thepawl a. The disk is thereby intermittently and partially rotated, so asto automatically bring each transparency into the field of thestereopticon in succession. Once during each complete revolution of thedisk the gear-segment g operates the belt-shifter so as to elfect therotation of driving-shaft M, thereby operating the moving picturedevice, cam l simultaneously engaging lever Z so as to effect theengagement of the nut L and screw M, the shifting of thelamp and housingopposite the said picture device resulting from such operation,andsimultaneously distending spring IF, the picture images being therebysubstituted for the transparency images upon the screen. Upon thecompletion of the operation of said picture-machine gear-segment greleases the pinion L and gear-segment g engages the train of gears L, Land L thereby shifting the belt back upon the idle pulley M and causingthe cessation of the operation of the moving-picture device. the releaseof the pinion L resulting from the continued rotation of the disk F,spring L becomes free to act and returns the lamp and housing to theiroriginal positions. The rotation of the gear-train also permits thelever Z to drop, so as to permit of the disengagement of nut L and screwM. Since the appertures f 2 are equidistant from each other, it is seenthat the intermittent movements of the disk are of equal length. Thesegment g therefore would not entirely disengage the pinion L and acomplete half-revolution of the latter would hence not be had. Suchhalf-revolution is, however, completed during the initial part of thenext intermittent disk movement, whereby the lever Z and pinion arebrought back into proper position for reengagernent by segment 9 Suchoperation of the picture device and shifting of the lamp and housing maybe caused to occur one or more times during one complete rotation of thedisk F, such number depending upon the number of gear-segments provided,as is readily understood.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as re gards the meansherein disclosed provided the means stated by any one of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinventionl. The combination in a unitary structure of a stereopticon, aseries of transparencies, means for successively bringing suchtransparencies into the field of the stereopticon, a

moving-picture device and means for operating such device intermediatelyof the projection of two successive transparency images.

2. The combination in a unitary structure, of a stereopicon, a series oftransparencies, means for successively bringing such transparencies intothe field of the stereopticon, a moving-picture device, a motor foroperating said transparencies and operating means, and means forperiodically connecting such picture device with said motor anddisconnecting such motor from said transparencyoperating means.

3. In a device for throwing images upon a screen, the combination of arotatable disk Upon positively connected with said driving means, I 5said wheel provided with a spring-dog, and a cam located in the path ofsaid dog, whereby the latter is periodically caused to engage said diskin one of said recesses and said disk caused to periodically andpartially rotate, 20 said dog adapted to release said disk on therecession of said cam.

Signed by me this 20th day of October,

EDWARD M. BARNES.

' Attest:

GEO. WM. SAYWELL, A. E. MERKEL.

